FLOWERING TREES AND SHRUBS 123 



Ostrya (Cupuliferae). 



Ostrya oaepinifolia (syn 0. vulgaris). — Common Hop 

 Hornbeam. South Europe, 1724. A much-branched, 

 round-headed tree, with cordate-ovate, acuminate leaves. 

 Both this and the following species, by reason of the 

 resemblance between their female catkins and those of 

 the Hop, and between their leaves and those of the 

 Hornbeam, have acquired the very descriptive name of 

 Hop Hornbeam. This is a large-growing tree, specimens 

 in various parts of the country ranging in height from 

 50 feet to 60 feet. The flowers are greenish-white. 



O. virginica. — Virginian Hop Hornbeam. Eastern 

 United States, 1692. This resembles the latter, but is of 

 smaller growth, rarely exceeding 40 feet in height. They 

 grow fairly well in almost any class of soil, and on 

 account of the long and showy catkins are well worthy of 

 cultivation. 



Oxycoccos (Vacciniaceae). 



Oxycoccos macrocarpus (syn Vaccinium macrocarpum). — 

 North America, 1760. This is a creeping shrub with 

 elliptic-oblong leaves and pinky flowers in spring. It is 

 known as the American Cranberry, and is largely cultivated 

 for its fruit. 



0. palustris (syn Vaccinium Oxycoccos) (Britain) has 

 creeping, filiform stems, pink flowers, and dark-red ber- 

 ries that are strongly acid. Natives of damp, swampy 

 ground. 



Oxydendron (Ericaceae), 



Oxydendron arboreum (syn Andromeda arborea). — 

 Sorrel-tree. Eastern United States, 1752. Unfortunately 

 this species is. not often found under cultivation, being 



